AdvApprox — OpenCascade.js

OCCT package AdvApprox: AdvApprox_ApproxAFunction, AdvApprox_Cutting, AdvApprox_DichoCutting, AdvApprox_EvaluatorFunction, and 3 more bound classes.

AdvApprox_ApproxAFunction

this approximate a given function

Constructors(2)

constructor(Num1DSS: number, Num2DSS: number, Num3DSS: number, OneDTol: NCollection_HArray1_double, TwoDTol: NCollection_HArray1_double, ThreeDTol: NCollection_HArray1_double, First: number, Last: number, Continuity: GeomAbs_Shape, MaxDeg: number, MaxSeg: number, Func: AdvApprox_EvaluatorFunction): AdvApprox_ApproxAFunction
Constructs approximator tool.
Warning: the Func should be valid reference to object of type inherited from class EvaluatorFunction from Approx with life time longer than that of the approximator tool;
the result should be formatted in the following way : <-Num1DSS--> <-2 * Num2DSS--> <-3 * Num3DSS--> R[0] .... R[Num1DSS]..... R[Dimension-1]
the order in which each Subspace appears should be consistent with the tolerances given in the create function and the results will be given in that order as well that is : Curve2d(n) will correspond to the nth entry described by Num2DSS, Curve(n) will correspond to the nth entry described by Num3DSS The same type of schema applies to the Poles1d, Poles2d and Poles.
Parameters (12)
- Num1DSS
- Num2DSS
- Num3DSS
- OneDTol
- TwoDTol
- ThreeDTol
- First
- Last
- Continuity
- MaxDeg
- MaxSeg
- Func
constructor(Num1DSS: number, Num2DSS: number, Num3DSS: number, OneDTol: NCollection_HArray1_double, TwoDTol: NCollection_HArray1_double, ThreeDTol: NCollection_HArray1_double, First: number, Last: number, Continuity: GeomAbs_Shape, MaxDeg: number, MaxSeg: number, Func: AdvApprox_EvaluatorFunction, CutTool: AdvApprox_Cutting): AdvApprox_ApproxAFunction
Approximation with user method of cutting.
Parameters (13)
- Num1DSS
- Num2DSS
- Num3DSS
- OneDTol
- TwoDTol
- ThreeDTol
- First
- Last
- Continuity
- MaxDeg
- MaxSeg
- Func
- CutTool

Static methods(1)

Approximation(TotalDimension: number, TotalNumSS: number, LocalDimension: NCollection_Array1_int, First: number, Last: number, Evaluator: AdvApprox_EvaluatorFunction, CutTool: AdvApprox_Cutting, ContinuityOrder: number, NumMaxCoeffs: number, MaxSegments: number, TolerancesArray: NCollection_Array1_double, code_precis: number, NumCurves: number, NumCoeffPerCurveArray: NCollection_Array1_int, LocalCoefficientArray: NCollection_Array1_double, IntervalsArray: NCollection_Array1_double, ErrorMaxArray: NCollection_Array1_double, AverageErrorArray: NCollection_Array1_double, ErrorCode: number): { NumCurves: number; ErrorCode: number }
Parameters (19)
- TotalDimension
- TotalNumSS
- LocalDimension
- First
- Last
- Evaluator
- CutTool
- ContinuityOrder
- NumMaxCoeffs
- MaxSegments
- TolerancesArray
- code_precis
- NumCurves
- NumCoeffPerCurveArray
- LocalCoefficientArray
- IntervalsArray
- ErrorMaxArray
- AverageErrorArray
- ErrorCode

Instance methods(18)

IsDone(): boolean
HasResult(): boolean
Poles1d(): NCollection_HArray2_double
returns the poles from the algorithms as is
Poles1d(Index: number, P: NCollection_Array1_double): void
returns the poles at Index from the 1d subspace
Parameters (2)
- Index
- P —
  Mutated in place; read the updated value from this argument after the call.
Poles2d(): NCollection_HArray2_gp_Pnt2d
returns the poles from the algorithms as is
Poles2d(Index: number, P: NCollection_Array1_gp_Pnt2d): void
returns the poles at Index from the 2d subspace
Parameters (2)
- Index
- P —
  Mutated in place; read the updated value from this argument after the call.
Poles(): NCollection_HArray2_gp_Pnt
- returns the poles from the algorithms as is
Poles(Index: number, P: NCollection_Array1_gp_Pnt): void
returns the poles at Index from the 3d subspace
Parameters (2)
- Index
- P —
  Mutated in place; read the updated value from this argument after the call.
NbPoles(): number
as the name says
Degree(): number
NbKnots(): number
NumSubSpaces(Dimension: number): number
Parameters (1)
- Dimension
Knots(): NCollection_HArray1_double
Multiplicities(): NCollection_HArray1_int
MaxError(Dimension: number): NCollection_HArray1_double
returns the error as is in the algorithms
Parameters (1)
- Dimension
MaxError(Dimension: number, Index: number): number
Parameters (2)
- Dimension
- Index
AverageError(Dimension: number): NCollection_HArray1_double
returns the error as is in the algorithms
Parameters (1)
- Dimension
AverageError(Dimension: number, Index: number): number
Parameters (2)
- Dimension
- Index

AdvApprox_Cutting

to choose the way of cutting in approximation

Instance methods(1)

Value(a: number, b: number, cuttingvalue: number): { returnValue: boolean; cuttingvalue: number }
Parameters (3)
- a
- b
- cuttingvalue

AdvApprox_DichoCutting

AdvApprox_Cutting

if Cutting is necessary in [a,b], we cut at (a+b) / 2.

Constructors(1)

constructor(): AdvApprox_DichoCutting

Instance methods(1)

Value(a: number, b: number, cuttingvalue: number): { returnValue: boolean; cuttingvalue: number }
Parameters (3)
- a
- b
- cuttingvalue

AdvApprox_EvaluatorFunction

Interface for a class implementing a function to be approximated by AdvApprox_ApproxAFunction.

Instance methods(1)

Evaluate(Dimension: number, StartEnd: [number, number], Parameter: number, DerivativeRequest: number, Result: number, ErrorCode: number): void
Function evaluation method to be defined by descendant.
Parameters (6)
- Dimension
- StartEnd
- Parameter
- DerivativeRequest
- Result
- ErrorCode

inherits class Cutting; contains a list of preferential points (pi)i and a list of Recommended points used in cutting management. if Cutting is necessary in [a,b], we cut at the di nearest from (a+b)/2

Constructors(1)

constructor(RecomendedCut: NCollection_Array1_double, PrefferedCut: NCollection_Array1_double, Weight?: number): AdvApprox_PrefAndRec
Parameters (3)
- RecomendedCut
- PrefferedCut
- Weight

Instance methods(1)

Value(a: number, b: number, cuttingvalue: number): { returnValue: boolean; cuttingvalue: number }
cuting value is
- the recommended point nerest of (a+b)/2 if pi is in ]a,b[ or else
- the preferential point nearest of (a+b) / 2 if pi is in ](ra+b)/(r+1) , (a+rb)/(r+1)[ where r = Weight
- or (a+b)/2 else.
Parameters (3)
- a
- b
- cuttingvalue
Returns
A result object with fields:
- returnValue: the C++ return value
- cuttingvalue: updated value from the call.

AdvApprox_PrefCutting

AdvApprox_Cutting

inherits class Cutting; contains a list of preferential points (di)i if Cutting is necessary in [a,b], we cut at the di nearest from (a+b)/2.

Constructors(1)

constructor(CutPnts: NCollection_Array1_double): AdvApprox_PrefCutting
Parameters (1)
- CutPnts

Instance methods(1)

Value(a: number, b: number, cuttingvalue: number): { returnValue: boolean; cuttingvalue: number }
Parameters (3)
- a
- b
- cuttingvalue

AdvApprox_SimpleApprox

Approximate a function on an interval [First,Last] The result is a simple polynomial whose degree is as low as possible to satisfy the required tolerance and the maximum degree. The maximum error and the average error resulting from approximating the function by the polynomial are computed.

Constructors(1)

constructor(TotalDimension: number, TotalNumSS: number, Continuity: GeomAbs_Shape, WorkDegree: number, NbGaussPoints: number, JacobiBase: PLib_JacobiPolynomial, Func: AdvApprox_EvaluatorFunction): AdvApprox_SimpleApprox
Parameters (7)
- TotalDimension
- TotalNumSS
- Continuity
- WorkDegree
- NbGaussPoints
- JacobiBase
- Func

Instance methods(10)

Perform(LocalDimension: NCollection_Array1_int, LocalTolerancesArray: NCollection_Array1_double, First: number, Last: number, MaxDegree: number): void
Constructs approximator tool.
Warning: the Func should be valid reference to object of type inherited from class EvaluatorFunction from Approx with life time longer than that of the approximator tool;
Parameters (5)
- LocalDimension
- LocalTolerancesArray
- First
- Last
- MaxDegree
IsDone(): boolean
Degree(): number
Coefficients(): NCollection_HArray1_double
returns the coefficients in the Jacobi Base
FirstConstr(): NCollection_HArray2_double
returns the constraints at First
LastConstr(): NCollection_HArray2_double
returns the constraints at Last
SomTab(): NCollection_HArray1_double
DifTab(): NCollection_HArray1_double
MaxError(Index: number): number
Parameters (1)
- Index
AverageError(Index: number): number
Parameters (1)
- Index